电力系统交流电参量检测系统的研究

文章提出了电力系统中交流电参量检测系统软硬件设计。硬件设计采用了同步采样法,同步信号由4046构成的锁相倍频电路实现;信号的采集主要由互感器和运放构成的转换电路完成;AD转换采用的是12位的AD574A芯片完成;采集的电压、电流数据经单片机处理后由RS232构成的串口上传至上位机。软件部分是以下位机采集的数据为检测对象,用数字信号处理技术对采样的数据进行分析,用DELPHI进行编程,实现电参量分析及显示功能。

Research of AC Parameter Detection System in Power System

This paper has presended the hardware and software design of AC parameter detection system in power system.The synchronizing sampling has been used in the hardware design while the synchronized signal is generated by the phase-lock doubling circuit of 4046; Signal gathering is realized by the transform circuit of mutual inductor and operational amplifier. The AD convention is completed by the chip 12-bit AD574A; The sampled voltage and current data pass on to the supreme position machine through the serial interface RS232. The part of software has realized the function of the electricity parameter analysis and the demonstration, which is taking the sampling data from the lower position machine as the examination object, and carring on the analysis with the digital signal processing technology to the sampling data, and then programming with DELPHI.